Machine for sealing envelops.



No. 861,955. l v PATENTED JULY 30,1907.

. F.H.DUNLAP.

I MACHINE FORSEALING BNVBLO'PS.

APPLICATION FILED 111mm, 190a;

4 SHEETS-SHEET 1- gvwaufoz PATENTED JULY so, 1907.

No. 861,955. I

' FLH. DUNLAP.

MACHINE FOR SEALING ENVELOPS.

APPLICATION FILED 111N327. 1906- i 4 SHEETS-SHEET 2.

in (Y) FLJ' av-Liam 'PATENTED JULY 30, "1907.

F." H. DUNLAP. I MACHINE PORSBA'LING BNVELQPS.

. QM WQ MM WQ W Q v y PATENTED JULY 30, 1907.

- Q 'P. H. DUNLAP.

MACHINE FQRSB'ALING ENVELOIPS,

APPLIOATION FILED JUN; 27, 1906.

az/am appertains to make and use the same.

and the object thereof is to improve the construction Envelops; and I do hereby declare the following to kept in a dampened or wet condition by means of a FREDERICK n. DUNLa P, on GIRA'RD, on o.

MACHINE FOR- sEn'LrNe ENvELors.

To all whom it may concern: I

Be it known that I, FREDERICK H. DUNLAJP, a citizen of the United'States, residing at Girard, in the county of Trumbull, State of Ohio, have invented certain new and useful Improvements in Machines for Sealing be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it This invention relates toenvelop sealing machines,

of the moistening and carrying rollers and of the flap folder. v

With this end in view, the invention consists in the 1 construction, combination and arrangement of parts,

all as hereinafter fully described and illustrated in the accompanying drawings, in which' Figurel is a plan view with the cover of the casing removed. Fig. 2 is a horizontal sectional view of the device with the table removed. I Fig.3 is a longitudiis a similar view on the line 33 of Fig. 1. Fig. 5 is'a side view showing the arrangement of the gears for rotating thevarious rolls. Fig. 6 is a perspective view of the folding device.

Like parts are designated by corresponding numerals in the several views. g I

Referring to the drawings, the machineiwill. be seen to be inclosed by a casing consisting of a top or cover 10, and side pieces 11 and 12 connectedE-ghereto. Located in said frame and extending a sligh tdistance beyond each end thereof, is a receiving table 13 having supporting feet and provided with a front section 14, there being a slight space between the table proper and its section, as shown in Fig. 3, into which extend a'pair of carrying rollers 15 and 16 mounted upon shafts 17 and 18 journaled in the sides of the frame.

The space. between the sides is sufficiently great to permit an envelop of practically any size to be sent through the machine at the forward part thereof with its flap extendedor open, as shown in Fig. 1, and the front carrying rolls are of approximately the same length.

The upper carrying roll 15 is formed with a reduced outer end 19 around which is fastened a layer of felt or other suitable moisture absorbent material, which is receptacle 21 carried upon the adjacent side of theframe and provided with an opening through which, th liquid falls upon said pad. I i I 7 As stated above, the front carrying rolls are of ap-- proximately the same length as the width of the frame while the intermediate carrying rolls 22 and 23 of which four pair are shown, are approximately only one-third as long as the front rollers. The-1011s oi' the several Specification of LettersgPatentQ I Applicationfiled'rl'une 27,1906. Serial No. 823,662.

Patente d'JuIy so, 1907.

pair are located on. opposite sides of the tagilfe 13 one above the other, as shown, and the lower re s 23 extend slightly above the upper face of said table through transverse slots 24 provided-for that purpose.

The upper rollers are mounted upon shafts 25, the outer endsof which are journaled in the frame side 12, 'whil'ejthe inner ends are carried by hangers 26 attached to the und es face of the frame top.

The outer ends of the carryingrollers 22, and the front moistening roll 15 are provided with gears 27 mounted thereon exterior of the side 12, there being 27 whereby the several rolls will be rotated in the same direction.

The lower carrying rolls23 which are of the same length as rolls 22 are mounted on shafts 29 which, however, extend entirely across said fl ame and carry on their outer ends gears 30, mounted exterior of side 11 which is provided in like manner with a series of idlers31. v i p 1 ltwill be seen that when an envelop 32 is sent -f tlli dugh the front portion of the machine with its flap open, the flapwill be moistened by the action of the pad upon the front roll 15, but that owing to the .formation of the inner carrying rolls 22,v the moistened flap will be untouched by said rolls as the envelop passes thereunder.

Located in close proximity to the outer end of the rearmost carrying roll 22 is the folding device 33, con sisting of a single strip of metal bent, as shown in Fig. 6*; into funnel shape, the larger opening being directed towards the frontof the machine. Owing to the curved formation of the folder, the moistened fiap of an envelop in its passage throughthe machine will contact with the inclined side of the holder, and will be folded over and closed upon the body of' thecnvelop.

Located adjacent the rear end of said folder is a pair of sealing'rollers 34 and 35 situated above arid below the receiving tableand extending into a transverseslot 36 therein, in like manner with the front rolls 15 and 16.

Journaled in the rear of the sealing rolls, are the shafts 36 and 37 by means of which motion is trans mitted from the lower gears 30 to the ,upper gears 2'? on the opposite side of the machine. To this end the upper shaft is provided at its ends with gears 38, one

of which is in mesh with the rearmost gear 30 of the Y lower rolls while at its opposite endthe gear 38 there on will mesh with the idler 28 which in turn meshes with the rearmost gear 27 of the upper rolls."

The rotation of shaft 37 is effected preferably through a gear 37 mounted thereon on the end opposite to that which carries the gear 30, the gear 37" beingin v thereto sdthat only the envelop flap may be mois-v 'grees n-thickness to' be sent through the machine the surface thereof, while the envelop will still be rollers '35 and 34' and the fla'p evenly pressed .down

ioforin um feeding space for the envelope-Hand mesh with and driven bye gear 38 on theshaft 39 of an engine (not shown). If desired, however, a

' cmnklntndle may be substituted for the gear 3? to I permit shaft 37 to be manually rotated.

The folding device is adjustably positioned: upon I the table 13 by nieans'of it set screw 39 passing through it 1i crfornti0u in said folder and through a. transverse slot 40 in the table, the lower end of said set screw carrying it ,nut i]. by means of which saidiolder isretnincd inits adjusted position. t

The shafts of the various rolls have a yielding inovement'with respect to each other, owing to the provision of coil springs 42 between the jiiurnul boxes 43 in which sziidshafts aremonnted in th'e respective sides of theirar'ne. v I I i I Owing to the yielding relation of the rollsof each pair, it will be possible for envelope of vrious dewithout being unduly squeezed or. otherwise injured.

The reduced end 19 of the front roll 15 is of suifici-ent length "to permit pads ofvarious widths beettached tened and. that various sizes of envelope may be -used. 1 Owing to theiprovision' of the short carrying rolls, 22 and 23, the moistened flap will not contact with sufficiently supported airli-grigped between said rolls' to" limit forward along thereceiving table through the folderand into position'to'beseized by the sealing upon the body ofjthe envelop.

The front section 14 'f gthei'tahle extendsn suifi cientdistsn enround. the iront end-'of the mhcliine the rein end of the tnhlexin' like manner extends be-' yond' the rear end ofn'the n echine. t. It be reedily' understoodlthat lettersof practishown and described.

cnllyeny size or thickness, be sealed by the inn chine, a

The operation of the machine will be readily un-, derstood from the above and further description thereof is thought to be unnecessary.

Modifications andcha-nges may be made within the scope of the claims and without departing from the-spirit of theinvention, which is therefore not in! What is claimed is An envelop sealing machinecomprising in combination a transversely slotted receiving table; n frame inolosing said table; a will of carrying rolls jonrnaled the front 'end'of the table on oppositefsides,thereof und extending linto the slots therein: the outer-end of the upper roll having' liquid to said 'pad; :1" serles of dependingjhnngers secured to the frame top; n'series of upper cnrryingvroils ing a molstening pad attached thereto; meunsif o r snppi v-' having their outer ends'journaleci in-one of the f'rnm'e' sides and their inner ends journuled in said hnngersz; n

series oi lower carrying rollsdisposed beneath said upper rolls, and extending into the slots ln the tnbldthe length 45 tended to be limited to the exact construction as of each of said upper and lower cnrryihg' roll'sl being less than the width, of the sealed envelop u fnldinii'device adjustabiy mounted upon the upper fn'ce oi'fsnid table adjacent the inner-end of the-"reairmostroller of said upper series, in position to engage and close the.-fiap of nu envelop-engaged b I id rolls; u vpair of seniingand v pressing rolls mounted in opposite sidesfof' the table in the-"rear of said carrying rolls, the rear 'end of said folder extending pnrtwnv betweensaid rolls; llih'uDSfOi yieldiihly supporting the rolls of the several pairs with respect to direction each'other; and'means for rotgiting the'sume inthesume of two witnesses.

Ii -testimony whereof, I'aiiix nxysignn'tni'e; in presence snnnnnien n DnNLAn 

